Motor.



W. F. STRAUB & A. A. RADTKE.

' MOTOR. APPLICATIN man real u. uns.

. 1,171,366. A Patented Feb. 8,1916.

2 SHEETS-SHEET I.

w. F. STRAUB & A. A. RADTKE.

MOTOR.

APPLICATION FILED FEB. H 1913.

1 1 7 1 366 Pat0nted Feb. 8, 1916.

2 SHEETS-SHEET 2.

'UNITED STATES PATENT OFFICE.

WILLIAM F. STRAUB ANID ALBERT A. RAID'IKE, 0F CHICAGO, ILLINOIS; SAI'D STRAUIB ASSIGNOB '10 ELEC'IRIC TIME RECORDER COMPANY, OF CHICAGO, ILLINOIS.

MOTOR.

Patented Feb. 8, 1916.

Application flled February 11, 1918. Serial N0. 747,653.

T0 all wkom it mag concem:

Be it known that we, WILLIAM F. STRAUB and ALBERT A. RADTKE, citizens of the United Staates, residing at Chicago, in the county of Cook und Stute of Illinois, have invented a certain new and useful Improvement in Motors, of which the following is a full, clear, ooncise, und exac t descript1on, reference being had to the accompanying drwings, forming a part of this specifica- .tion.

Our invention relates to motors und l1as for its objeci; the provisioxi er improved means for receiving und indicating time, our inventiou being more particularly related to what we might call seconclary clocks or such as are under the control of a master clock.

.Our invention concerns itself with that character of system for sending und indicating time which in its eneral nature may be sa1d to be similar to tEat disclosed, in the patent to A. A. Radtke, N o. 921,280, issued T}il a e improvd seconclary clocl Wll10l'l forms the subject matter 0I" this application is designed (so receive certain impulses of current in a certain order, whioh impulses are controlled by a master clock, ancl Which impulses suitably actuauz the seconary clock to thereby indicate the filme as given by the master clock.

In one form 0f carrying out our invention, We haVe three magnets symmetrically arranged about an axis, Which magnets coutrol an armature, which armature is so arranged that succeeding energizations in rotation of said magnets cause r'otation of said armature', thereby to actuate suitable hands toindidate the tigne. WVe prefer to ent1ploy a single armature for the eleotromagnets, altho-ugh o'f cou rse, our invention Y is not to be so limited, und. this armature preferably has a plurality of radial elements so arranged that one of these elements is nearest to that 'partioular idle magnet which is next to b e energized. In this way it will be seen tlfat the armature may rotate as these magnets are successively engaged.

Our invention contemplates a preferred form for this armature oonstruction. Our invention also concemplates mezms Whereby in a device of this general character suitable lockin or holding mechanism is provided whic may hold the armzv ture m a certain position pending subse quent energizatio'n of another eleotromagnet, and Which devices at the same time are applicable to bring the armature to the 4 exact p0sition it is supposed; to occupy fo r euch particular energization. In this way Wo avoid any difl1culty that there may be o'f the armature being retracted 0r pre- Vented from following to its peculiaf rest- +1ng positions as designated, but at all times controlling mechanism, a portion of the ar' mature being shown as removed more clearly to reveal the structural details; F ig. 4 is a detail view of the binding post mechanism, and Fig. 5 is a diagrarnmatic view m illustrate the inter-relation between the master and secondary clocks.

Referring more particularly to Fig. l, we sl1ow a cas1ng 1 prefe;rably having a cover 2 provided with a orystal 3 und having a Wall 4 130 make a band compartment within Which suitable hands 5 and 6 for time indicatin purposes are mounted concentrically w1th ehe shaft 7. The hands are both driven through the agency of intermediate gear wheels 8 'and 9 as W111 be Well umlerstood to indicate hours und minutes, the gear Wheels receiving their rotative elfort from an armature 10. This armature is fastenecl to a shaft 11, which shaft is pivoted 01'1 the bearing 12, und which also anrries at its lower extremit a second armature 13. The upper end 0 this shaft is provided with suitable sleeves as may be required to accommodate the hands, and is also guided by the bracket 14 hold in place upon suitable studs secured to a plate 15. The plate 15 in connection with a second platze 16 hold between them three electro magnets 17, 18 und 19. The plat e 16 also has stde 20 to 11013. the 7nidge 21 Which carries the bearin sturl 12. The structure comprisizlg the t ree electromagnets together with plates 15 and 16, and which st1=ucture carries the arm1ture shaft together with the armatures, is he1d in the cover 1 in any suitable manner. The plates 15 and 16 togetherwith the electromagnets ture with a Plurality of radial elements 22 throughout its entire Periphery, which elements are the particulr ones adapted 130 cooperate yvit h the cores 23, 24 alid 25 03E the electromagneizs 17, 18 end 19 respectively.

These geres projact through the electromagnet3 a slight d i' stanqe, ,0f cours'e, so that. these eures are ada-pted to coperate simu1 taneouely wit h both 2Lrmatures 10 and 13. Referrmg to Fig. 2 it will be seen that the element 22 which 1s immediately over,the core 25 is t he. one that has been 1'a'st called upon to perform its function of totating the armature, electromagnet 19 being the 'on'e tobe last energized. The next electromagnet to be energme'd will be 18 and aicope1- ating e1e'ment 22 of this magnet is in such close proxirhityhat .it will 1'no ve directly over th e 'center hneof this electromagnet 18 when 111 is energized. Thereby the arme- 1311116S are moved clockwise a slight angular 01stance suificijent tobring the element 225 111t0 such prox1mity to the core 0f'the el ec tromagnet 17 that the next energizzition of the electroma'gnet 17 will cause attraction of this element 22 to thereby furthermove the atmatures in ;a clqckwise direction of rotation, and thus the series of. energizations of these electromagne'ts co11tinues to, thereby eause intermediate rotation of the' ermature in answer to movements 0fthe master clock, thus to indicate the1timeby means of the hands 5 and 6. The arme,- tu re 10 is provided with a plurality ofpinS 26,th'ere being 0ne Pin Zion each radial element 22, und these plus co "erate with suitab1e devices mdre clearly s own in Fig. 3 to so controliahe movement of the armture that its moveznentin answer to each impulse Will bring the armature exactly into the position where its operative element 22 is directly centered 'with reSpect to the electromagnet. These devices also caiuse suitab1e holding of the armature until the energization o the following electromagnet takes pl ace at. which time: the particular device last emplo ed releases th.e armature, and permits the ev-1ce of the next succeedth at partikzulr electromagpet.

'ing -eleciaromagnet to come into blay. In

Fig. 3 we have shown these devices and have shown the pins 26 of the armature 10, the armature 10 having beim omittedfrom th1s illustration more clearly to reveal the operahion of these devices now to 1qe explai ned. These! devices preferably cons1si; *0f p1votally mounted arins 27 pivotally mounted et 28 in the platze 15, Which elements 27 areoit magnetic materiz'zl and have ole pieees 29 adapterl to be contro]led by the p ixrt1cular e1ectromagnet With which they are associa1ied. The elements 27 also carry cams 30,

. which cams are adapted 110 enter between adjacent teeth 26, thereby to accurately senter the armature upon each energization of the elecgromagnet. Assume for instance that the electromagnet 19 has 'been energized to cause the-armature to occupy such osition Which Would bring the ins 26 substantially intothe position shown in Fig. 3. This segne energization of the electrqmagnet 19 causes attraction of i ts corresponding element 27 to thereby cause the cam 30 to enter'between adja.cent pins 26 so as to accurately center this armature and 130 hold the .szu'ne during the time that the electromag- 'net 19 is 'energized. We might also add that the energization of one electromagnet is preferably not release l until the succeeding electromagnet has been energized. ;After th e energization of the electromagnet 19 the electroma nei;v 18 wou1d be energized and immediate y the energization of the electromagnet 18 .ta4kes p1ace, electromagnet 19 is 'denergized, the'reby permitting electromagnet 18 to rtate the armeture clockwise, Which thereupon moves the element 27 related to the electromagnet 19 mit oi the path ofthe pins-26 and permits the e1eament 27 essocieted with the electromagnet 18 to come into, play,tq theteby. again cau se a. proper centering'g 01' graduation .of. the

arinature osition. Subsequehtly to this, of

course, the electromagnet 17 wouldbe ener- 'g iz'ed and the sa.me functions would be performed :by the element 27 carresponding so Betwkeen the 1p1ates 15 and 16 suitable strips 31 are provided. which ca1:ry binding posts 32 und 33 by means 01E which the current is lerl to the particular' electrom'agnets.

In Fig. 5 We show the' e1eciirdrh3gnefl7 18 and 19 es recei'ving thei r -energization' from a sourceof current 34 through the in- .terposition of stationary switbh 'elements 35,

36 an d 37 over 'Which a m0vable switch element 3818 movable, This inovable. switch elemelit may be suitably controlled from any moving body, in this instance shown es a,

clock 39, the copnection beixig the clock 39 and the mo vablie switch element 38, beiug diagrammati celly indidated by the' 'connect-" ing shaft 40. 1 v In Fig. 4 we show more in detail how-jahe binding posts 32 are mounted so as to be in; sulated from their particular mounting strips 31.

Having thus described one form which our invention may take We do not wish t0 be understood as limiting our invention to this particular arrangem'ent as sei: forth, but

Having thus described a manner in which the same may be carried out, what we claim as new and desire t0 secure by Letters Patent is:

1. In a device of the character described the combinatiori with a plurality of e1ectromagnefs symmetrically arranged about an axis, an armature rotatable about said axis adapted for successive movements 1n response to energizations of said elec'tromagnets, and means under the coritrol 0f said electromagnets to cause the proper angu1ar alinement 0f said armature, said means including a pivofied armature for each electromagnet and means whereby said second armatures control said first aforesaid armature.

2. In a evice 0f the character described Ehe eombination With a plurality of electromagnets symmetrically arranged about an axis, an armature rotatable about said axis adapfied i:'0r successive movements in response to energizations of said electrornagnets and means under the control cf said electromagnets to cause the proper angular alinement of said armature, said means including a pivoted arxnature for each electromagnet and means whereby said second armatures control said firs't aforesaid armature, s-aid last aforesaid means including a plurality ot pins upon said first aforesaid armaisnre and a cam upon each 01. said second aforesai. armaturea S. In a cievice 0f the character described the combinafiion With a plurality of electromagnets symmetrically i1rranged aboui; an axis, an amnature rotatable about said axis adapted for step-by-step movement in re- 'sponse to diflerent energizations of said electromagnets, and means controlled by said electromagnets and in inductive relation thereto to mechanically center said'armature in each o1 its resting positions.

4. In a device of the character described the combination with a plurality of e1ectromagnets, an armature adaptedfor step-bystep movement in response to difierent energi7ations of said electro-magnets, and means controlled by said electro-magnets and in inductive reiation thereto t0 mechanically cen@er said armature in each 0f its resting pomtions.

5. In a device 0f the character described the combination With a pluralifi) .Qf electro magnets, an armatnre adapted for step-bystep movernent in response to difierent energ1zations of said electro-magnets, and

means controlled by said electro-rnagnets and in inductive relation thereto to mechanically center said armature in each of its resting positions, said means including an armature.

6. In a device of the character described the combination With a plurality of electromagnets, an armature adapted for step-bystg p movement in response to difierent en ergizations 0f said electro-magnets, and means -controlled by said electro-magnets and in inductive relation thereto to mechanically center said armature in each of its resting positions, said means including an armature, a cam a1id pins on said first aforesaid armature.

7. In a device 0f the chalacflef described the combination with a plurality of electro magnets adapted for energizatmn in rotation, and an armature movable -step-by-step With changes in the energization of said electro-magnets, said armature consisting 0f a circular disk cf magnetic material With unbroken periphery and having radial slots. 8. In a device of the character described the combination with a plurality of electromagnets adapted for energization in rota- .1310n, and an armature having pole pieces considerably in excess of the .number of electro-magnets aforesaid and being movable step-by-step with changes in the energization of said electro-magnets, said armature consisting of a circular disk of magnetic material with unbroken periphery and having radial slots to form sa1d pole pieces.

9. In a device of the character described the combination with a plurality cf electromagnets adapted for energizat1on in rotation, and an armature having 'pole pieces considerably in ex cess 01 he number of electro-magnets af0resaid anc1 being movable step-by-s'tep Wih changes in he.energization of said electro-magnets, sai armature consisting of a circular disk of magnetic material having radial s1ots 150 form said pole pieces.

10. In a device cf the character described the combination With a plurality 0f paralle11y arranged electro-magnets adapted for energization in rotation, and two armatures co.perating respectiwaly with the opposite extremities of said electro-magnets, moirable step-by-ste with Changes in the energization of sai electro-magnets, said armatures consisting of circular disks of magnetic material with unbroken periphery and having' radial slots.

11.In a device of the character described the combination with a plurality of paralle]ly arranged electromagnets adapted for energization in rotation, tWo armatures coop'erating respectively with the opposite eX tremities o.f said electromagnets, movable step-by-sap with changes in the energization 0f sai'd electromagnets, each of said armatures consistin'g of a circular disk of magnetic material with unbroken periphery material with unbroken periphery and having radial slots, a. casing for containing said electromagnets and armatures, a artition within said casing 011 which said electromagnets anc1 armatures am mounted, and a plurality of indicating hands driven by sa'1d. armature.

In witness whereof, We hereunto subseribe our names this 13th day of J anuary, 25

WILLIAM F. STRAUB. ALBERT RADTKE.

Witnesses:

HAZEL ANN JONES, MAX W. 'ZABEL. 

